Ehhhh, Krisp is the least of Discord's privacy problems. I'd say start with all its monitoring of what you do on your system as low hanging fruit.
That being said, try to get all your friends to switch to SonoBus for voice chat, strictly. It’s awesome! It’s way lower latency (so less talking over each other), clear, point to point, dead easy to start since it doesn’t need an account, customizable for quiet or noisy mics, works on everything, I could go on and on.